Currently, I am able to modify the font size by accessing the first style sheet using the following code:
document.styleSheets[0].cssRules[0].style.fontSize = "16";Here is the CSS snippet:
h1 {font-size: 12}
.someClass {}As the CSS file grows larger, it becomes challenging to keep track of the index numbers of rules. Is there a way to select rules by class name or ID instead?
Regrettably, there is currently no method available for such a task. Specifically, the API restricts actions to deleting and inserting rules only. Moreover, accessing even these actions may be denied by browsers depending on the origin of the stylesheet.
To learn more, please visit:
https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet
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